condition mean min max ZT0-3 45.03613333333333 28.423650000000002 60.1498 ZT4-7 33.336749999999995 33.336749999999995 33.336749999999995 ZT8-11 32.35875 32.35875 32.35875 ZT12-15 48.912049999999994 39.5494 58.274699999999996 ZT16-19 53.65705 53.65705 53.65705 ZT20-23 72.70670000000001 72.70670000000001 72.70670000000001